Hoist construction



Patented Apr. 7, 1925.

UNITED STATES PATENT OFFICE.

v HOISTFCONSTRUCTION.

Application led January 31, 1924. Serial No. 689,725.

j 'o all whom t may concern Be it known that JOHN W. OsrRANDnR, acitizen of the United Madison, in the county of Dane and State ofWisconsin, has invented certain new and useful Improvements in HoistConstructions, `of which the following is a specication. i

The present invention relates to hoistconstruct-ion and the main objectof the inventionis to utilize small sectioned timber in building a hoistand more particularlyV in using clamping bolts for the timber withoutboring holes through the same. Another object of the invention is toconstruct thehoist so that the angulai'position may be adjusted in themanner of a so-called bodiment of the invention `is illustrated, and

yFigure 1 is a fragmentary front elevation of the hoist; `V

Figure 2 is a fragmentary section along line 2 2 of Figure 1; v

Figure 3 isa fragmentary section along line 3-3 of Figure 1; n l

Figure 4 isa cross section along line 4--4 of Figure 1;

Figure 5 is a perspective view of one detail; v

Figure 6 is a section along line 6 6 of Figure 4t;

Figure 7 is a fragmentary elevation of the top portion of a hoist ofheavier construction than shown inthe preceding figures;

Figure 8 is a transverse section along line 8 8 of Figure 7, and

Figure 9 is a plan view of afdetail.

In Figures 1 to 6 of therdrawings is shown a hoist constructed ofltwo'uprights or timbers 10 having a cross section preferably two .inchesby four-inches. This is a size that is commonly carried on themarlet andtherefore easily obtained.' These uprights are spaced apart by one ormore spacing blocks 11 positioned i-ntern'iediate of. the

ends, a base block 12 at the lower end of the hoist, and a crown 13atthe: top. In this manner a beam is formed of considerable strength. i Ar f The base block 12extends a suiiicient distance up between theuprights tovform a solid lower endl of the beam upon which a winch 1/1is secured. VThis winch is constructed in the usual manner with-a drum15 for the hoisting rope or cable 16,- a ratchet States, residing at dogand wheel 17, andcrank handles 18. The bottom ends of the uprights 10and the base block 12 are held together by side plates 19 and securingbolts'20, `while still other bolts 71secure the base lblock or spreader12 to the plates 19. In the `center'of the base block 12 is threaded aspindle 21 preferably pinned, as at'72, and forming a pivot forthehoist. This spindle projects below the lower end of the beam and: restson a base block 22 which, for this purpose, is provided with a socket23. This socket is conical with a wide bottom and a narrow mouthslightly larger than the diameter of the spindle 21 so that the spindle,together with the hoist beam, y

can rock or swivel in the socket. The free end of the spindle issurrounded by a short piece of pipe 24 and washers 25 and 26 arefurnished-at eachend of the pipe or sleeve 24 upon the spindle 21. .y

The spacingblock 11 as well as the upper end of the base block 12 aresecured by a clamping device 27 shown in detail in Figures 4, 5 and 6.The clamp-ing `device 27 consists ofv anL-bolt 28 and two eye bolts 29and 30, .together with an anchor or cross piece 31. .As will be`noted-these bolts are placed around the timbers and do not penetratethe same as is usual in similar constructions. In this manner thetimbers are not ruined and can be used forsimilar or other purposes whenthe hoist is taken down. The L-bolt 28 has a long and ashort shank eachengaging in the corresponding ears 32 and 33 of the 'short eye bolt 29and the long eye bolt 30, whereby the three bolts engage all four sidesof the beam. The ends ofthe Y L-bolt are threaded and adapted to receiveeach a sleeve 311, washers 35 36. and a nut 37.

The cross piece or anchor 31' .is provided with two open-'sided channels38 and 39 adapted to accommodate the two eyeV bolts 29 and 30. Thesechannels accordingly run at right angles to each other, one beingsuperposed above the other, as best seen in Figures 5 and 6. The crosspiece is placed. at one corner of the beam in such a manner that theopen sides of the channels face in` wardly, thereby facilitating theplacing-of the `eye bolts 29 and 30 in the channels as indicated inFigures 4 and 6. The free ends of the eye bolts 29 and 30 are threadedand adapted to each receive a sleeve 10, washer 4:1 and a nut 42. Itwill thus be seen that when the nuts 37 and42 are turned home the bolts28, 29 and 80 will draw the timbers 'closely together' to form a ltirmconnection. The sleeves and 40 are mainly provided for adjustment sothat the same clamping bolts may be used for smaller or largerbeamconstruction.

The crown 13 has a top portion 4 3, see Figures 1. and 2, covering theupper ends of the uprights l0, and downwardly directed side walls etLlplaced on the outer faces thereof and secured thereto by :means ofsecuring bolts On the top .portion 43 stands a pipe 'i6 extendingupwardly, and adapted to house a suspension rod tr' for the vhoistingcable or rope A16 which engages over a pulley block 48 hung in an eye i9furnished at the lower end of the rod 47. A suitable opening 50 isprovided for `vthe arod in the top portion a3. f

A guy rope plate -51 preferably square in outline is placed around therod 47, resting upon the top portion 52 ofone of the braces 58 and `60above the pipe 4G. A nut 53 threaded `on the rod 117 to retain the same-in position. The four corners of the guy rope plate 5l are turned downfto forni rounded edges `and adjacent to these corners are providedapertures '5ft in which the :upper ends of guy ropes Y55 are secured.'lt ywill thus be seen that the rounded edges at the corners kwillprevent the cuttingfoflthe ropes at these places.

Under vthe nut is furnished a washer 5G and between this washerand thetop portion 52 is inserted a lshort piece of pipe 57 which Ais slightlylonger lthan fthe `thickness of fthe guy rope plate 5l so that the nut53 and the washer 5G do not actually rest upon the `guy rope plate ilbut upon the short pipe 57 which transmits the pressure downwardlythrough 'the 'top portion 52 of the brace 58, land through .the brace G0rand Vthe pipe G to the top portion of the crown. This arrangenient is'made for the purpose of permitting -the guy rope plate 51 to `turnaround the short pipe 52 and adjust itself to the direction ofthe guyropes .55 for which reason the central opening inthe plate 51 has alarger diameter than the outside of said pipe 57.

' "Braces 58 bolted to the sides of the crown, as at 59, extend upwardly4termmating with the top 4through which vthe rod t7 extends. At rightangles to the `braces 58 are positioned other braces (i0 bolted, as at(il, to the upright-s l0. rfhese other braces (30 also extend upwardlyand vengage around the rod 47.

It is evident that beside the nuts 37, -l2 and 53, lock nuts may also beprovided on the corresponding bolts 28, 29, 30, yand rod 4r.

In 'Figures '7 and 8 is shown a hoist construction for heavier loads inwhich four beams 63 `are rshown preferably each constructed of fourcorneruprights 6% using timbers four inches by four inches in crosssection and spaced apart by spacing blocks G5. Clamping devices ($6 ofsimilar construction as the above described clan'iping devices 27 areVused to firmly connect the uprights. A crown (i7 and plate (58 for theguy ropes 69 are furnished and secured at the top ofthe hoist in asimilar manner as shown in Figs. l to 6.

The hoist in accordance with the present invention, whether .of the`lighter or heavier construction, uses Vtimbers which may be taken downand used for other purposes as, with exception of the ends thereof, noboring of the timbers is needed and they are accordingly .undamaged andas good as new.

Referring particularly to Figs. 2 and 3, these show the beam in tilted`position and supported by the guy ropes 455 in the manner `of a ginpole. lVhen thus tilted the spindle 2l rests on the bottom of the socket23 engaging the mouth thereof and it will thus be evident that the beamcan be given a considerable inclination in `any direction to facilitatethe hoisting work Vto* be carried out.

Having thus described the invention, what is. claimed .as new is:

l. A structural beam composed of a plurality of longitudinal members,spacers between said members, clamping devices bearing against the outerfaces of said members and said spacers and encircling the same, saidclamping devices being slidably engaged one with another, and .meansfitted to said devices to effect longitudinal movement of the severaldevices and bind them around the beam.

2. A structural beam composed of a plurality of longitudinal members,spacers for said members, and clamping devices engaging the kouter facesof said membersand said spacers and adapted to vbind them firmlytogether; each of said clamping devices including an L-bolt, a pair ofeye bolts engaging with said L-bolt, an element adapted to connect saideye bolts, and securing means for said bolts.

3. A structural beam composed of a plurality of longitudinal members,spacers for said members, and clamping devices engaging the outer facesof `said membersl and said spacers and adapted to bind lthem firmlytogether; each of said lclamping de. vices including an lL-bolt, -avpair of eye bolts engaging with said L-bolt, an anchor piece providedwith channels adapted to receive said eye bolts, and nuts threaded onthe ends of said eye bolts and said L-bolt respectively and adapted tofirmly secure the 4bolts and the anchor piece together around said beam.

a. A structural beam composed ofi a plurality of longitudinal members,spacers for said members, and lclamping devices engaging the outer facesof saidinembers and lll) said spacers and adapted to bind them lirlnlytogether; each of said clamping devices including an L-bolt, a pair ofeye bolts engaging with said L-bo1t, an anchor piece provided withchannels adapted to receive said eye bolts7 and nuts threaded on theends of said eye bolts and said L-bolt respectively and adapted tolirmly secure the bolts and the anchor piece together around said beam,said channels being situated at right angles 10 to each other n saidanchor piece and opening inwardly as regards the beam.

ln testimony whereof I alix my signature.

JOHN W. OSTRANDER. [1.. s]

